git remote --mirror bug?

Created a mirror like so:
 git --bare init 
 git remote add --mirror os2kernel /usr/local/src/os2kernel

Git fetch errors out
 git fetch os2kernel 
fatal: * refusing to create funny ref 'refs/stash' locally

Also 
git remote show os2kernel 
* remote os2kernel
  URL: /usr/local/src/os2kernel
Warning: unrecognized mapping in remotes.os2kernel.fetch: +refs/*:refs/*

git --version
git version 1.5.4.3

 Jocke